I dislike the "you don't have adhd, you live in capitalism" meme in general, but there is a big difficulty in knowing how much you might be overloading yourself, trying to get to an unattainable normal because your actual material conditions are not normal.
If you're working 60 hour weeks for most people there's not much saving you from having a very messy life! But your peers might all also be in that environment, and you will see people who navigate that somewhat successfully.
Of course you could be working much less and simply "be lazy" and suffer downstream of that. You might be two mindset changes away from being a lot less stressed.
Or you might have a medical condition that makes certain things harder! Or you might not.
At the end of the day there are medical conditions that exist and are fairly scientifically proven to exist in some form and have treatment. And plenty of people who spend time saying that stuff doesn't exist, so there's vocal pushback against that which rubs some people the wrong way.
But there's also just human introspection (which is part of how we grow). The new thing is that this introspection often happens more in the open, a lot of times with the whole world watching.
Even 20 years ago you might talk with other people around the world but it would at least be in more closed spaces.
Why is it everywhere now? Because we diagnose and treat it. In the old days what did we do with ADD kids? Hit them. What did we do with ADD adults? Call them stupid and lazy.